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bce ›› 2015, Vol. 49 ›› Issue (5): 7-10.doi: 10.3969/j.issn.1673-5854.2015.05.002

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Preparation of Nanocellulose and Its Aerogel from Bagasse Pulp

ZHANG Kai-tao1, SUN Pei-pei1, SHANG Shi-bin1,2, LIU He1,2, WANG Dan1,2, LI Jing-jing1   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA; Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2014-06-23 Online:2015-09-30 Published:2015-10-12

Abstract: Nanocellulose (NCC) was successfully prepared from TEMPO-mediated oxidation of bagasse pulp assisted with ultrasonic treatment, then the cellulose aerogel was obtained via freeze-drying. Furthermore, the morphology, structure and properties of NCC and its cellulose aerogel were investigated by transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and scanning electron microscope (SEM). The TEM observation showed that obtained NCC had a diameter about 20 nm and a length ranged from 100 nm to 400 nm. XRD analysis inhabited that NCC maintained the structure of cellulose typeⅠ. TG analysis demonstrated that the thermal stabilities of both the oxidized bagasse pulp and NCC became worse when they were compared with the raw material. SEM images revealed that cellulose aerogel exhibited a three-dimensional network structure when the mass fraction of NCC in suspension was 0.1%, while cellulose aerogel displayed a porous "Honeycomb" structure when the mass fraction of NCC was more than 0.1%.

Key words: oxidition, bagasse pulp, nanocellulose, aerogel

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